Mickey Mouse first appeared in May 1928 as a single test screening of the short Plane Crazy, but it, and the second feature, The Gallopin' Gaucho, failed to find a distributor. Following the 1927 sensation The Jazz Singer, Disney used synchronized sound on the third short, Steamboat Willie, to create the first post-produced sound cartoon. After the animation was complete, Disney signed a contract with the former executive of Universal Pictures, Pat Powers, to use the "Powers Cinephone" recording system; Cinephone became the new distributor for Disney's early sound cartoons, which soon became popular.